CSS 리셋

브라우저 플렛폼마다 각각 유저 기본 스타일을 가지고있음
기본 스타일을 초기화 하기위한 코드스니펫

노멀라이즈 리셋 폭력적인 리셋

 html {
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
  }
  body {
    margin: 0;
  }
  main {
    display: block;
  }
  h1 {
    font-size: 2em;
    margin: 0.67em 0;
  }
  

  
  hr {
    box-sizing: content-box; 
    height: 0; 
    overflow: visible; 
  }
  pre {
    font-family: monospace, monospace; 
    font-size: 1em; 
  }
  

  
  a {
    background-color: transparent;
  }
  

  
  abbr[title] {
    border-bottom: none;
    text-decoration: underline; 
    text-decoration: underline dotted;
  }
  

  
  b,
  strong {
    font-weight: bolder;
  }
  

  
  code,
  kbd,
  samp {
    font-family: monospace, monospace;
    font-size: 1em; 
  }
  

  
  small {
    font-size: 80%;
  }
  

  
  sub,
  sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }
  
  sub {
    bottom: -0.25em;
  }
  
  sup {
    top: -0.5em;
  }
  

  
  img {
    border-style: none;
  }
  

  
  button,
  input,
  optgroup,
  select,
  textarea {
    font-family: inherit; 
    font-size: 100%; 
    line-height: 1.15; 
    margin: 0; 
  }
  

  button,
  input { 
    overflow: visible;
  }
  

  button,
  select { 
    text-transform: none;
  }
  
  
  button,
  [type="button"],
  [type="reset"],
  [type="submit"] {
    -webkit-appearance: button;
  }
  

  
  button::-moz-focus-inner,
  [type="button"]::-moz-focus-inner,
  [type="reset"]::-moz-focus-inner,
  [type="submit"]::-moz-focus-inner {
    border-style: none;
    padding: 0;
  }
  
  
  button:-moz-focusring, 
  [type="button"]:-moz-focusring,
  [type="reset"]:-moz-focusring,
  [type="submit"]:-moz-focusring {
    outline: 1px dotted ButtonText;
  }

  
  fieldset {
    padding: 0.35em 0.75em 0.625em;
  }
  

  legend {
    box-sizing: border-box;
    color: inherit; 
    display: table; 
    max-width: 100%; 
    padding: 0; 
    white-space: normal; 
  }
  
 
  progress {
    vertical-align: baseline;
  }

  
  textarea {
    overflow: auto;
  }
  
  
  [type="checkbox"],
  [type="radio"] {
    box-sizing: border-box; 
    padding: 0; 
  }
  

  
  [type="number"]::-webkit-inner-spin-button,
  [type="number"]::-webkit-outer-spin-button {
    height: auto;
  }
  [type="search"] {
    -webkit-appearance: textfield;
    outline-offset: -2px; 
  }
    [type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
  }

  
  ::-webkit-file-upload-button {
    -webkit-appearance: button;
    font: inherit; 
  }

  
  details {
    display: block;
  }

  summary {
    display: list-item;
  }
  
  template {
    display: none;
  }

  [hidden] {
    display: none;
  }

미니 리셋 간소화된 리셋

/*! minireset.css v0.0.6 | MIT License | github.com/jgthms/minireset.css */
html,body,p,ol,ul,li,dl,dt,dd,blockquote,figure,fieldset,legend,textarea,pre,iframe,hr,h1,h2,h3,h4,h5,h6{
    margin:0;
    padding:0
}
h1,h2,h3,h4,h5,h6{
    font-size:100%;
    font-weight:normal
}
ul{
    list-style:none
}
button,input,select{
    margin:0
}
html{
    box-sizing:border-box
}
*,*::before,*::after{
    box-sizing:inherit
}
img,video{
    height:auto;
    max-width:100%
}
iframe{
    border:0
}
table{
    border-collapse:collapse;
    border-spacing:0
}
td,th{
    padding:0
}